Hello Hannah ; nice to meet you, thank you for accepting my invite.
If you want to respond to someone that made a comment on your wall or you want to make a comment on persons wall ( if you are friends with them ) it is easy to make friends here. Then back to what i wanted to say to make a comment , just click on that persons name or picture and it will take you to their page. Then scroll down to their wall write someting and click submit. There is alot of information and things to do here, like joining groups, discussion boards, making friends to network with here, plus so much more that can possibly help you find that govt / fed job. If you have any questions just leave a comment on either my wall or any of your friends walls and we will help you.